Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
13008excellentexcellent31excellent
120072lightly pollutedexcellent31excellent
110016excellentexcellent41excellent
100019excellentexcellent41excellent
090020excellentexcellent51excellent
080034goodexcellent61excellent
070032goodexcellent71excellent
060041goodexcellent71excellent
050041goodexcellent71excellent
040034goodexcellent71excellent
030025goodexcellent61excellent
020035goodexcellent61excellent
010029goodexcellent61excellent
000034goodexcellent61excellent
230040goodexcellent71excellent
220038goodexcellent61excellent
210033goodexcellent51excellent
200016excellentexcellent31excellent
190012excellentexcellent21excellent
180011excellentexcellent21excellent
170016excellentexcellent21excellent
160012excellentexcellent11excellent
150011excellentexcellent11excellent
140013excellentexcellent21excellent